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International Automotive Technicians Network
Re: '13 Mazda 3 with constant P0303, cannot feel misfire
Posted to Technical Discussion Forum on 8/15/2019

Are you proficient enuff with the scope to compare #3 with one of the other known good injectors ? I might give you some insight.

Our bookkeeper has Subaru's DIT version of GDI, at 60k it had significant carbon on the back of the intake valves. I wanted to d... Login to read more.